Calendar



Nov. 20, 192

H. s. BOWMAN CALENDAR Filed Sept; 9, 1927 2 Sheets-Sheet v I-INVENTOR.5.30am: Ari

BY Y

A TTORNEY.

Nov. 20, 1928. Y

, H. s. BOWMAN cALENDAR Filed Sept. 9, 1927 2 Sheets-Sheet 2 27 m g 3 241o 9 3 ATTORNEY.

Patented Nov. 20, 1928.

UNITED STATES HERBERT S. BOWMAN, OF CHICAGO, ILLINOIS.

CALENDAR.

Application filed September 9, 1927. Serial No. 218,380.

The invention relates to calendars of the perpetual type and its objectis to provide a simple device by which any month and the days thereof ofany year over a long period of years may be shown, and upon which theday of the week upon which any given date will or did fall may bereadily ascertained.

Another object is to provide a device wherein novel means is employedfor setting the mechanism so that the first day of a selected month of aselected year is positioned at the correct week day.

Other objects and advantages will appear hereinafter.

An embodiment of the invention is illus trated in the accompanyingdrawings in which,

Figure l is a front. elevational view of the device; Fig. 2 a rearelevational View of the device; Fig. 3 a viewsubstantially on line 33 ofFig. 1 of the month selector; Fig. 4: a cross section on line 44l ofFig. 1; Fig. 5 a side view of the year selector taken on line 5+5, ofFig. 1; Fig. 6 a cross section on line 66 of Fig. 2 Fig. 7 alongitudinal cross section of the day selector and Fig. 8 a developedview of the stops of the day selector.

'In the illustrative embodiment of themvention, 1 is a suitable base and'2 is a suitable back member mounted on the base. An opening 3 is formedin the back and above this opening the days of a week are imprinted orotherwise shown in proper order. On the rear side of the back aresecured two supports or rods l upon which is slidably mounted a plate 5having upon its face opposing the.

back 2 the numbers representing the days of a month, similarly to theusual calendar except that there are thirteen vertical columns offigures instead of seven as in the common calendar, so arranged that afull month will be visible through the opening 3 irrespective of whichday of the week the figure 1 is below.

A lever 6 is pivotally mounted on the base and is loosely or pivotallyconnected to the plate or slide 5. A spring 7 is connected to the leverand to the base and opposes move ment of the slide to the right (Fig.1). A lug 8 projects from the back 2, behind which the lever may beengaged to. hold the same i when the selectors are being set ashereafter 5 is slidably inountedflon the shaft 10, which explained.

Thelever 6 is also. suitably connected to one side of the cylindricalstopcarrier 9 that shaft is preferably square. Five groups of I recesses11 are formed on the opposite sides of the member 9, eachgroupconsisting of several horizontal recesses progressively increasing indepth, as shown in F ig. 8,fto form a group of .stops 11 against one ofwhich the end of a selected lever 12 will abut.

The levers 12 are pivotally mounted upon a carrier 13 that is mounted onthe base 1, and their arms rearwardly of their fulcrums differ inlength. One end of the shaft 10 is revolubly borne by the carrier (Fig.7 A suitable spring or other suitable means 14; engages the levers andnormally holds the forward ends of the levers in elevated position, eachlever having a lug 15 that rests inan annular groove 16 formed in thecarrier and forming the fulcrum of the lever. A guard 17 retains thelevers on the carrier. Any suitable manner of mounting the pawls orlevers 12 will suffice. One end of the shaft 18 is also revolublysupported by the carrier. Upon the shaft 18 is secured a cam carrier 19having a selected number of cams 19, nine such cams being shown, (Figs.4 and 7) ,and which cams are adapted by rotating the shaft 18 to bemoved under the rear ends of the pawls 12 selectively to rock theselected pawl and cause its forward end to engage the selected abutment11 A cylindrical or other member 20 is secured to the shaft 18 andcarries on its periphery the names of the months in proper order, acover 21 having a port 22 at a selected point therein being secured tothe base 1 and coveringthe front side of the member 20 with the aperture22 exposing any one of the names of the months. An annular rack 23 and asuitable hand wheel 24 are secured to the shaft 18, the rack having asmany teeth as there are months in the year and being engaged by a rollerpawl 25 held against the rack by the spring 26. The shaft 18 may berotated in either direction to cause the name of a selected month to beexposed through the port 22, and when thus exposed the pawl 25'is'engaged between two teeth of the rack 23 so that the shaft is heldagainst further rotation. Before the shaft can be rotated thelever 6must be swung so as to withdraw the stop member 9 forwardly from thelevers since one ofthe levers is in engagement with one of the stops.

A hand wheel '27 is secured to the free end of the shaft 10 and anannularrack 28 is also secured to the shaft and is engaged by a pawlsimilarly to the-rack 23, the rack 28 having 28 recesses. A cylinder 29is slidably mounted der 29, or a part thereof, and a port 33 is formedtherein through which any number on the cylinder will be visible. At theleft side of the port the number 19 suitably disposed to cooperate withany number on the cylinder and represent a year, the year 1927 beingshown in Fig. 1. As in the case of shaft 18, the stop carrier must beshifted away from the levers before the shaft 10 may be rotated. Therotation of shaft 10, under the control of the rack 28 and its pawl, tocause the selected year to be exposed through the port 33, carries thestop carrier with it and positions the proper group of stops so that thecorrect stop of the group will be engaged by the lever thatis rocked bythe cam corresponding to the month exposed on the cylinder 20 throughthe port 22.

I have found that the calendar repeats itself after twenty-eight years,hence I provide on the stop carrier a. total of 28 stops arranged infive groups, there being a similar quantity of yearly numbers on thecylinder 29 that will pass the port 33 in one complete revolution of thecylinder, and there being also 28 recesses in the rack 28.. Thedevelopment of the stop carrier 9 (Fig. 8) shows the twenty-eight stopsmarked with the days of the week in five groups, leap years beingprovided for by omitting every fifth day. The

names of the months are indicated at the proper stops representing thefirst days of the months respectively in 1901, 1929, 1957, etc. Startingfor example, with 1901, J anuary 1 of that year fell on Tuesday and thev Tuesday stop in group 1, Fig. 8, is the selected stop for that monthand year; January 1, 1902, fell on Wednesday and its stop is theWednesday stop of group A; the Thursday stop of group A isthe stop forJanuary 1, 1903; the Friday stop of group A is the January, 1904, stopand the Sunday stop of group B is the January, 1905,stop, the Saturdaystop being omitted in group A because 190 1 was leap year, the samerotation of stops continuing for 28 years, or until 1929, thestop forJanuary, 1929, being the Tuesday stop of group A. Theother months of1901 take the same rotation each month starting in at the proper stop.Since March and November always begin on the same week day in any yearand April and July also begin on the same week day and-the same is trueof September and December, itis only necessary to use nine pawls orlevers insteadof twelve.

In operation the lever 6 is swung to retract both the calendar plate andthe stop-carrier and is engaged behind the lug 8. The annual or yearlycylinder 29 is rotated until the desired year indicating numerals areexposed at the port 33. The stop-carrier 9 is simultaneously rotated toposition the stops in proper relation to the pawls or levers 12. Themonthly cylinder is then rotated until the name of the selected month isexposed at the port 22. The cam-carrier is simultaneously rotatedby theshaft 18 and the cam that is positioned on the carrier for the selectedmonth rocks the proper pawl 12 and causes it to engage the proper stopwhich has been lined up with that pawl in accordance with the yearexposed through the port 33 The lever 6 is then released and thecalendar slide moved to the left (Fig. 1) by thesp-ring 7 the stopcarrier being also moved along the shaft until the selected pawl 12engages the selected stop whereupon the calendar slide comes to rest,the numeral 1 thereof being below the name of the correct week dayheading on the back 2. The rotation of the cylinder 20 in step with thecam carrier selects the predetermined cam for the selected month and therotation of the cylinder 29 in step with the stop carrier places therequired stop in alinement with the pawl that the selected cam willrock.

Having once arranged the cams in conformity to the month cylinder 20 andhaving properly disposed the pawls or levers 12 on the carrier 13, andhaving formed the stops as shown in the development of the cam carrier,Fig. 8, and alined them properly with re spect to the yearly cylinder,the device 1s ready at all times to set the calendar for any month andyear.

It will be noted from Fig. 8 that the stops of each group are setbackprogressively from the .side face of the carrier 9, except for each leapyear the stop for the succeeding year 1s set back twice as far as thepreceding stop.

What I claim is: y

1. A calendarconsisting of a movable member carrying thereon columns ofnumerals representing the days of the month, a fixed member in front ofthe movable member and having the names of the days of the week in ahorizontal row, thefixed member having an aperture therein adapted toexpose any seven of said columns of numerals below the said names of theday of the week, and means operatively connected to the movable memberfor adjusting the said member to inclicate a selected month of aselected yearand comprising a movable stop carrier having thereon apredetermined number of stops arranged in predetermined order torepresent a period of successive years, means to selectively positionany one of said stops, a SeIlQS of stop engaging members, and means toactuate the engaging members selectively, said means being arranged inaccordance with the months of a year.

2. A calendar consisting of a movable member carrying thereon columns ofnumerals representing the days of a month, a member in front of saidmovable member and shaped to expose any seven of said columns ofnumerals and means operatively con nected to the movable member forcontrolling the movement of said member and comprising a slidably andrevolubly mounted stop carrier, means simultaneouslyrevoluble with thestop carrier having thereon a succession of members representing asequence of years, means to expose any one of said year numerals, aplurality'of members adapted to engage any of the stops, a revolublemember adjacent to the latter members and having means thereon to engageand operate said latter members selectively, a member revoluble with thelatter revoluble member and having thereon the names of the months ofthe year in succession and means to expose any one of said names.

3. A calendar consisting of a movable member carrying thereon columns ofnumerals representing the days of the month, means to expose any sevenof said columns constituting an entire month, a rotatable and shiftablestop carrier having thereon a predetermined number of stops to representa period of successive years and having an operative connection with themovable member, a cylinder rotatable in unison with the stop carrier andcarrying about its periphery a series of numerals representing asuccession of years, means to expose any selected year numeral wherebyto position the stop carrier for said year, a plurality of stop engagingmembers and means to selectively actuate the latter members to controlthe shifting movement of the stop carrier, said means including a seriesof members adapted to selectively engage and operate the stop engagingmembers respectively.

4. In a calendar, amovable member carrying a plurality of columns ofnumerals representing days of the month, a peripherally adjustablecarrier having stops thereon repra senting a period of successive years,means to shift the carrier and the movable member simultaneously andselectively actuated pawls to engage the stop carrier for controllingsaid shifting movement and causing said columns of numerals to representa selected month.

5. In a calendar, a movable plate carrying a plurality of columns ofnumerals representing days of the month, means to expose a portion ofsaid columns, a revolubly and slidably mounted carrier having thereon aplurality of stops, a cylinder having thereon a sequence of numeralsrepresenting a period of years, an apertured member adapted to exposeany one of said year representing numerals, means to rotate the carrierand cylinder simultaneously to expose the selected year representingnumeral and adjust the carrier, means to simultaneously move the plateand the carrier and selectively operated 'iembers to engage the stops tolimit the said simultaneous movement of the plate and the carrierwhereby the numerals of an entire month on the plate are exposed.

6. In a calendar, a movable plate having thereon columns of numeralsrepresenting days of the month, means to expose seven of said columns ofnumerals, a movable stop carrier, means having connection with the plateand the carrier to cause simultaneous movement thereof, a revolubly andslidably supported cylinder having a series of numerals arranged in aspiral line thereon representing a period of years, means to expose anyone of said year representing numerals, means to rotate the stop carrierand the cylinder simultaneously and in step with each other, meansengaging the cylinder to cause it to slide on its support to cause anyselected year representing numeral to be exposed, and selectivelyactuated members to engage the stop carrier and limit the simultaneousmovement of said carrier and the plate, whereby to cause seven of thecolumns of numerals to be exposed.

7. In a calendar, a movable plate having thereon columns of numeralsrepresenting days of the week, a fixed member having an aperture thereinthrough which any seven of said columns are visible, the said membercarrying the names of the days of the week under which said columns areadapted to register, a revoluble shaft, a carrier slidably mounted onthe shaft and having a series of stops thereon arranged in apredetermined order, a cylinder slidably mounted on the shaft, a spiralgroove formed in the peripheral wall of the cylinder, a series ofnumerals on the cylinder between the turns of the groove, means toexpose any one of said year representing numerals, fixed means engagingthe groove to cause the cylinder to slide on the shaft when the shaft isrotated to expose a selected year numeral, therotation of the shaftcausing the stops to assume a predetermined position relatively to theexposed year numeral and selectively actuated means to engage the stopsto limit the sliding move ment of the carrier and cause the requiredcolumns of numerals on the plate to register with the said names of thedays.

8. In a calendar the combination of a movable member having thereon aplurality of columns of figures representing the days of the month, arevoluble and slidable memher having a connection to the movable memberand having a plurality of stops thereon, means to adjust the latterrevoluble and slidable member selectively, a fixed member, a pluralityof pawls mounted on the fixed member and adapted to engage the stops, itrevoluble carrier, a plurality of cams on the latter carrier adapted tooperate the paWls selectively, a revoluble cylinder having on itsperiphery the names of the months of a year, the cylinder beingoperatively connect ed to the cam carrier to rotate the carrier forselecting a cam and causing it to operate the required pawl and means toexpose any one of the names on the cylmcler. 10

In Witness whereof I have hereunto signed my name.

HERBERT s. BOWMAN.

